Chemical adding control system and method for sewage treatment plant

Abstract

The invention discloses a chemical adding control system and method for a sewage treatment plant and belongs to the technical field of sewage treatment. The system comprises a sterilizing chemical storage tank, a sterilizing contact reaction tank and a control device and is characterized in that the sterilizing chemical storage tank is connected with the sterilizing contact reaction tank through a chemical conveying pipeline, the sterilizing chemical storage tank is provided with a sterilizing chemical liquid level meter, the chemical conveying pipeline is sequentially provided with a sterilizing chemical flow meter and a proportional valve along a direction from the sterilizing chemical storage tank to the sterilizing contact reaction tank, and the water outlet pipeline of the sterilizing contact reaction tank is provided with a water outlet flow meter; the sterilizing chemical liquid level meter, the sterilizing chemical flow meter, the proportional valve and the water outlet flow meter are connected with the control device. The chemical adding control system has the advantages that a production process is monitored, controlled and managed in a centralized manner and controlled in a decentralized manner through the computer technology, and sterilizing chemical adding quantity can be regulated and optimized in real time; the system is high in automation level, capable of saving chemicals during sewage treatment and capable of lowering production cost.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a chemical dosing control system and method for a sewage treatment plant. Background technique [0002] The main principle of the contact disinfection pool sewage treatment technology is to add disinfectant to the sewage to kill a large number of E. coli in the water, ensure that the E. coli can reach the standard stably, and reduce the risk of water quality exceeding the standard. At present, manual operation is generally used to add disinfectants to sewage, but with the rapid development of science and technology, the requirements for automation are getting higher and higher, the market competition is fierce and labor costs are rising, and the mode of manually adding disinfectants exists. The disadvantages are: firstly, the efficiency of disinfection and dosing is low, the accuracy of system disinfection and dosing cannot be guaranteed, and a certain amount of waste is...

AI Technical Summary

Problems solved by technology

At present, manual operation is generally used to add disinfectants to sewage, but with the rapid development of science and technology, the degree of automation is getting higher and higher, the market competition is fierce and labor costs are rising, the mode of manually adding disinfectants exists. The disadvantages are: First, the efficiency of disinfection and dosing is low, the accuracy of system disinfection and dosing cannot be guaranteed, and a certain amount of waste is caused

Second, it is not easy to change the structure of the production line, and it requires human supervision and operation, which increases the production cost

Therefore, the way of manual disinfection and dosing control is far from meeting the current needs of high automation

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